Overview
The AD9640ABCPZ-125 is a dual 14-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is designed to support various communications applications where low cost, small size, and versatility are crucial. The AD9640 features a multistage, differential pipelined architecture with integrated output error correction logic, making it suitable for high-performance applications.
The ADC operates at sample rates of 80, 105, 125, and 150 MSPS and is characterized by its low power consumption and high signal-to-noise ratio (SNR). It also includes several functions that simplify automatic gain control (AGC) in system receivers, such as fast overrange detection and a signal monitor block.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Sample Rate | MSPS | 80 | - | 150 |
| Resolution | Bits | 14 | - | 14 |
| SNR @ 125 MSPS | dBc | 71.8 | - | - |
| SFDR @ 125 MSPS | dBc | 85 | - | - |
| Power Consumption @ 125 MSPS | mW | - | 750 | - |
| Analog Supply Voltage | V | 1.8 | - | 1.8 |
| Digital Output Supply Voltage | V | 1.8 | - | 3.3 |
| Operating Temperature Range | °C | -40 | - | 85 |
| Package Type | - | 64-Lead LFCSP | - | - |
Key Features
- Integrated dual 14-bit, 80/105/125/150 MSPS ADC with a multistage, differential pipelined architecture and integrated output error correction logic.
- Fast overrange detect and signal monitor with serial output for efficient automatic gain control (AGC).
- Proprietary differential input that maintains excellent SNR performance for input frequencies up to 450 MHz.
- Operation from a single 1.8 V supply and a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
- A standard serial port interface supporting various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), enabling the clock DCS, power-down, and voltage reference mode.
- Flexible analog input range: 1 V P-P to 2 V P-P.
- Integrated ADC sample-and-hold inputs and internal ADC voltage reference.
- Pin compatibility with the AD9627, AD9627-11, and the AD9600 for easy migration between different resolutions.
- Flexible power-down options for significant power savings.
Applications
- Communications systems
- Diversity radio systems
- Multimode digital receivers (GSM, EDGE, WCDMA, LTE, CDMA2000, WiMAX, TD-SCDMA)
Q & A
- What is the resolution of the AD9640ABCPZ-125 ADC?
The AD9640ABCPZ-125 is a dual 14-bit analog-to-digital converter.
- What are the sample rates supported by the AD9640ABCPZ-125?
The AD9640ABCPZ-125 supports sample rates of 80, 105, 125, and 150 MSPS.
- What is the power consumption of the AD9640ABCPZ-125 at 125 MSPS?
The power consumption at 125 MSPS is approximately 750 mW.
- What is the operating temperature range of the AD9640ABCPZ-125?
The operating temperature range is from -40°C to +85°C.
- What types of digital output supplies are supported by the AD9640ABCPZ-125?
The AD9640ABCPZ-125 supports digital output supplies from 1.8 V to 3.3 V CMOS or 1.8 V LVDS.
- Does the AD9640ABCPZ-125 have integrated sample-and-hold inputs?
Yes, the AD9640ABCPZ-125 has integrated ADC sample-and-hold inputs.
- What is the purpose of the signal monitor block in the AD9640ABCPZ-125?
The signal monitor block allows the user to monitor the composite magnitude of the incoming signal, aiding in setting the gain to optimize the dynamic range of the overall system.
- How is programming for setup and control accomplished in the AD9640ABCPZ-125?
Programming for setup and control is accomplished using a 3-bit SPI-compatible serial interface.
- What are some common applications of the AD9640ABCPZ-125?
Common applications include communications systems, diversity radio systems, and multimode digital receivers.
- Is the AD9640ABCPZ-125 pin-compatible with other ADC models?
Yes, it is pin-compatible with the AD9627, AD9627-11, and the AD9600 for easy migration between different resolutions.
